Picker-staff check for looms



(No Model.) n L. WHITNEY & H. K. JACKSON.

PICKER STAFF CHECK FOR LCOMS. 7 No. 285,941. Patented Oct. 2, 1883.

m/mw The slot H in the base of the cap serves as an large to permit free movement 'in whichsists of a metallic stand, L, (which may be se- NITED S'ra'rns rricn.

LEWIS W'HITNEY, OF SALISBURY, AND HARRY K. JACKSON, OF AME-S BURY, MASSACHUSETTS.

PlCKER-STAFF CHECK FOR LOOlVlS.

SPECIFICATION forming part of Letters Patent No. 285,941, dated October 2, 1883.

Application filed November 17, 1882. (No model.)

To all whom it may concern Be it known that we, LEWIs WHITNEY and HARRY K. JACKSON, citizens of the United States, and residing, respectively, at Salisbury and Amesbury, both in the county of Essex and Commonwealth of Massachusetts, have invented a new and useful Improvement in Picker-Staff Checks for Looms; and we do clear, concise, and exact description of the in vention, taken in connection with the drawings accompanying and forming a part thereof,

Figure 1 represents a portion of a loomframe with a picker-staff in position and our improved check attached. Figs. 2 and3 are front and side views, respectively, of our check detached. Fig. 4 is a frontview of the spiralspring and its arm. Figs. 5, 6, 7, 8 are details.

\Ve will. describe the invention, using letters of reference corresponding with those in the accompanying drawings.

Our picker-staff check is secured to the sley of the loom, as shown in Fig. 1; and it con:

cured by screws which pass through lugs on the base of the stand directly to the sley,) a spiral spring, B, formed with the downwardly-projecting arm D, a cap, G, and a screwbolt, K, which secures the cap to the stand.

opening for the arm D, and is sufficiently of the arm. The arm D is bent, as shown, in order to throw its lower end into the path of the pickerstafi, and so secure contact with the staff.

The spiral springB is so coiled as to cover the sides and also the end of the core N of the metallic stand L. It has its end bent toward the center of the end of the core, in order that such end may be clamped firmly between the top of the core and the cap G when the cap is secured in position by the screw-bolt K. If the spiral slips on the core N, its spring action is lost, and we therefore sometimes find it necessary to place a washer between the top of the spiral and the cap. The use of the washer will prevent the slipping of the spiral around the core. The cap G not only serves to hold the spiral spring B and its arm D in position, but it is also arranged to cover and entirely conceal the spring, thus preventing dust and other foreign substances from filling and clogging it.

In attaching our check to a loom the stand L is secured by screws to the sley. The spring and arm are attached by placing the spiral over the core N of the stand. The cap G is then put on over the spiral, and so that the arm D will pass through the slot H of the cap, and the screw-bolt K inserted. and screwed tightly into position, to so compress the parts as to prevent the spring slipping on the core, and the check is ready .for use.

It will be obvious that our improved check may be used and will be operative and effective without the use of the cap G. The head of the screw-bolt K, when the cap is not used, will come in contactwith the end of the spiral spring, and will hold it firmly in position 5 or a washer may be used with the bolt, thus ac complishing, obviously, the same purpose in holding the spiral and'preventing its slipping as if the cap were used. e prefer, however, to use the cap, for the reasons heretofore stated; but, as will be apparent, the changes indicated may be made without departing from the essential features of our invention.

What we claim is 1. The combination of the metallic stand L and its projecting core N with the spiral spring B, arm D, cap G, and bolt K, substantially as described.

2. The metallic stand L and projecting core N, in combination with the spiral spring B, arm D, and bolt K, substantially as show-n.

LEWIS XVHITNEY. HARRY K. J AOKSON Witnesses:

GEO. ALLEN, CHARLES M. KELLEY. 

